Side-frame and bolster spring bearing



E. C. WASHBURN. SIDE FRAIVIE AND BOLSTER SPRING BEARING.

APPLICATION FILED NOV.24, 1920.

Patented Apr. 4, 1922.

VVcenter by the usual central member.

UNITED STATES EDWIN c. wAsHnrrmv, on ENGLEWOOD;l NEW JERSEY.

SIDE-FRAME AND BOLSTER SPRING BEARING.'

Specication of Letters Patent.

Application led November 24, 1920. Serial No. 426,290.

To all 'whom t may concern:

Be it known that I, EDWIN C. WASHBURN, a citizen of the United Sta-tes, residing at Englewood, in the county of Bergen and State of New Jersey, have invented certain new and useful Improvements in Side- Frame and Bolster Spring Bearings, and l do hereby declare the following to be afull, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to a bearing structure for the bolster and the truck sideframe of a railway car and is particularly shown as a bearing for the supporting springs upon which the ends of the bolster rest.

' It is. an object of this invention to provide such a spring bearing which will permit of lateral swaying movements of the bolster without detachment ofthe same from the springs and without lessening of the spring support.

This and other objects of the invention will be apparent from `the following descrip tion in connection with the accompanying drawings, in which- Fig. l is a view in side elevation of a railway side frame and the bolster and bolster;

arrangedat slight angles to a horizontal.

springs carried thereby;

Fig. 2 is a central section through the bolster and side frame taken on the. line 2-*2 of Fig. l; and

Fig.- 3 is a sectional plan taken approximately on the line 3 3 of Fig. 2.

. Referring to the drawings, the side frame a of-usual construction is shown as comprisv ing compression and tension members and also a tie member, which members are connected by the vertically disposed bo'lster Icolumns which form the receiving meansl for the ends of the bolster. The bolster b which extends between the side fra-mes at opposite sides of the car, is also shown as having 'compression an'd tension members joined at the side frame and bolster shown and above referred to are of a known construction and such members have been illustrated arid described in detail in my prior pending appli. cations, Ser. N o. 389,995, Vfiled June 18th,

1920 and Ser. No. 389,997,1ed June .18, 1920.

Tie members or planks c extending-between the side fra-mes on opposite sides of the car, are also shown in Fig. 2.

The spring bearing structure to which the.

The side frame.

i In assembling the parts of the side fra-me presentiinvention is directed, .is duplicated Patented Apr. 4, 1922.

on opposite sides of the car and the description of the same on one side of the car will be suflicient to understand the structure thereof. y Y

The Side frame is provided with a spring buffer or bearing plate 1 extending between the bolster columns near the lower end thereof and this plate is surrounded at its upper edge by a light flange 2. The surface of the plate is arranged to receive a series of-nested coiled springs and the said surf'aceis formed to incline Itoward the center of thev car at a slight angle. lVhile this angle may vary within certain limits, anangle of substantially five degrees has been found suitable and efficient in actual service. As shown, four series of sprin s 3 are disposed upon the bearing plate 1 an these springs receive the weight of and support the bolster b. A convenient number of thin platesor shim. members et are in direct contact with the springs and these shim members rest upon the plate 1 and also against a. spring buifer or bearing plate 5 carried by the bolster. This plate 5 also has a surrounding lla-nge depending from4 the bearing surface thereof which is of somewhat greater height than the flange 2. The bearing surface of the plate 5 is also and4 inclined toward the center of the car,

2 therein forming a spring plank ofv strongand rigid construction'.

As ,shown in Fig. equipped .with lateral portions movable in slots a1 .of the side frame. When the bolster 4so as to be in substantial parallelism with v' 1,the plate 5 is moves inwardly and the springs '3 are suf,

ficiently flexed, said portion will rest on the bottom .'of slot aland the-spring plates 1 and member'c forming the spring plank can be inserted between the be. supported on the sides of the bolster columns of said frame aand then slid downwardly to its seat.

The' bolster is thus supported at its end4 upon springs carried between the tvsio inclined bearing surfaces. When the car receives a -lateral impulse or sways from side to side, the bolster can move, forinstance, to the left, as seen in Fig. 2, and the springs 'will be carried to a vertical or slightly past a vertical position. This will result in a slight rising movement of this end of the bolster and the springs will be under torsional strain. The swaying movement toward the left is thus resisted by the springs on the left side, and the swaying of the weight of the bolster toward right will, in like man l have the seat for theA two contact springs, at

one end of the structure, andthe seat for the inside pair of springs at the same end inclined toward each other, thus forming a pair of seats inclined toward each other at each end of the structure. With such an y will arrangement the load will be distributed more evenl and the returning power of the s rings wil be exerted from bth ends of t e bolster. I

It is thus seen that applicant has roduced a sprin bearing for a bolster w ich Awill permit o a swayingy or lateral movement of the bolster without dislocation of the sprin and which will be resisted yieldingly y the springs. The springs will at the same time continue to support the load-and there will be no lessening of the sprin effect in this direction. The shims 4 used in sucient number to insure that the springs will be under proper tension for the known weight of the car.

It will, of course, be understood that various changes can be made in the form and" details of the device without departing from the sco e of' applicants invention, which, general y statedconsists in the matter shown and described and set forth in the appended claims.

What is claimedv is:

1. A bearin for the bolster and side frame'of a rai way car having 'in combination bearing surfaces at the ends of said bolster oppositely disposed bearing surfaces on said side frames, the bearing surfaces on the bolster and side frame being in substantial arallelsm and inclining slightly toward the center of the car, and springs disposed between said bearin surfaces.

2. A spring bearing for a olster and side fgrame structure havin in combination a bearing plate on said si e frame, a plurality of springs sup oitedwhereby, and a bearing plate'on 4said lster adapted to rest upon said s rings, said latter plate being inclined s ight angle 'toward the center 'of the at a car.

3., A spring bearing for bolster and side frame structure having in combination a bearing late on said side frame inclined at a slig t angle toward the center of the car, coiled springs carried by said plate and inclining at a corresponding angle inwardly toward the center of the car and a bearingplate carried`by the bolster and bearing upon said s rings.

4. A spring bearing `for a bolster and side frame structure having in combination a bearing plate on said side frame secured to and between the bolster columns thereof, said bearing surface inclining at a slight angle to the horizontal toward the center of the car, coiled springs carried by said bearing surface and hence, inclining at a slight angle to the vertical toward the center of y l the car, anda bearing surface carried by the bolster and resting upon said s rings, said latter bearing surface valso inc ining ata similar'angle toward the center of the car.

5. A spring bearing frame structure having. in combination a bearing plate on the side frame having a surface inclined at a slight angle toward the center of the car, a bearing plate on the bolster having a surface in substantial parallelism with said surface, springs carried by the first mentioned plate upon which the second mentioned plate rests, and flanges on said plates surrounding the saine and enclosiigr the ends of the springs. l

6. truck structure having set inclined springs inter d between its bolster and spring carryinglportion, said bolster being mounted for endwise movement .whereby said springs will be flexed by said endwise movement. i

7. A truck structure including a bolster arranged for endwisemovement and having oppositely inclined springs interposed between said bolster andthe spring carrying portion.

8. Ad truck structure comprisin nested springs inclined toward one anote direction transversely of the truck. L

9. A truck structure having side frames, bolster springs and a spring plank, said for bolster and side plank consisting of spring bases and a con 1715 Witnesses:

Jon-N B. Lewis, y .'[sAiicHrpuarLl ignwi-N o. wAsHBURN.

r in a 

